The Architect Engineer And Operative Builders Constructive Manual Or a Prac
The Architect Engineer And Operative Builders Constructive Manual Or a Prac
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In our eReader you can find the full English version of the book. Read The Architect Engineer And Operative Builders Constructive Manual Or a Prac Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Architect Engineer And Operative Builders Constructive Manual Or a Prac
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To quickly assess the difficulty of the text, read a short excerpt:
17 is a tool, of a pine-apple shape, used 24 for drawing up a piece of tubing when required. It is jagged all over like a rasp, and being struck down forcibly within the tube, it takes fast hold, and allows of its being drawn up. Fig. 1 9 is another implement for effecting the same object; it is a kind of spear with four prongs : being forced down, the points pierce the tube, and enables it to be withdrawn.
Fig. 18 is a triangular instrument with jagged teeth, used for getting up loose stones w...hich some- times lie in the hole and impede the work: upon being struck down, the stone becomes fixed between the notches of the prongs, and is then extracted.
At twelve or -more feet from the ground, a stage is erected over the hole. Upon this stage is fixed a double-handed winch, with tackle complete, for two or more men to work, in'raising or lowering the instrument, &c. , which becomes of great weight when the perforation has proceeded to a consider- able depth. Between this stage and the ground the men are employed either in turning round the instru- ments in the act of boring (which they do by the assistance of iron levers fastened crosswise to the boring rods by means of screw bolts), in screwing or unscrewing the rods and tools, or in the various other operations before described.
What to read after The Architect Engineer And Operative Builders Constructive Manual Or a Prac?
You can find similar books in the "Read Also" column, or choose other free books by Christopher Davy to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
17 is a tool, of a pine-apple shape, used 24 for drawing up a piece of tubing when required. It is jagged all over like a rasp, and being struck down forcibly within the tube, it takes fast hold, and allows of its being drawn up. Fig. 1 9 is another implement for effecting the same object; it is a kind of spear with four prongs : being forced down, the points pierce the tube, and enables it to be withdrawn.
Fig. 18 is a triangular instrument with jagged teeth, used for getting up loose stones w...hich some- times lie in the hole and impede the work: upon being struck down, the stone becomes fixed between the notches of the prongs, and is then extracted.
At twelve or -more feet from the ground, a stage is erected over the hole. Upon this stage is fixed a double-handed winch, with tackle complete, for two or more men to work, in'raising or lowering the instrument, &c. , which becomes of great weight when the perforation has proceeded to a consider- able depth. Between this stage and the ground the men are employed either in turning round the instru- ments in the act of boring (which they do by the assistance of iron levers fastened crosswise to the boring rods by means of screw bolts), in screwing or unscrewing the rods and tools, or in the various other operations before described.
What to read after The Architect Engineer And Operative Builders Constructive Manual Or a Prac?
You can find similar books in the "Read Also" column, or choose other free books by Christopher Davy to read onlineMoreLess
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